For those of you who are in the process of deciding whether to purchase the new 3D World Medium Format Stereo Camera, I will give my quick impressions of the camera after mounting some images from my first roll of film. I'll start with the main conclusion; this is an incredible camera, well worth the money (if you have it).
1. The lenses are very sharp. My images shot at f22 were totally in focus from edge to edge. They are certainly comparable to Mamiya or Yashica medium format lenses I have used. Sputnik lenses are not even in the same ballpark.
2. The shutters appear to be perfectly synchronized. After all the problems I have experienced trying to synchronize the shutters on twin-cameras and homemade cameras it was wonderful to go through the shutter speeds and see that they all seem to work perfectly.
3. The apertures seem to be well-matched. Those of you who have tried to match twin-cameras will know the frustration of seeing that the apertures on "identical" cameras may be off by as much as 1/2 stop, and that the size of the aperture will vary depending on whether you are opening or closing the aperture. (This may be true of the 3d World as well, but the apertures are linked well-enough that at least they are always the same.)
4. The focal lengths are well-matched. (I haven't measured the percentage of difference, but in the mounted slide they appear to be exactly the same size.) Conversely I have been extemely frustrated by the variation in focal length in the cameras I have tried to match.
5. I didn't have the problem that others mention with the film wind mechanism. It worked perfectly.
6. The viewfinder works well. Easy to see the image, nice to have the eyepiece focusing mechanism also.
We medium format shooters are extremely fortunate to be able to purchase this camera. The company can't be making any money on it, so go out and buy one before they stop making them.
David Lee